The day Billie Jean King defeated Bobby Riggs in the famous “Battle of the Sexes” - Tennis Majors

On this day, Billie Jean King set out to champion the cause of women’s tennis by taking on 55-year-old Bobby Riggs, a former world No 1 who did not respect women’s tennis

King: Time for 'sexes' battles over The Arkansas Democrat-Gazette - Arkansas' Best News Source

50 years after the iconic 'Battle of the Sexes,' Billie Jean King says women 'are not done yet

Battle of the Sexes, History, Participants, & Facts

May 13, 1973: The day Bobby Riggs “massacred” Margaret Court - Tennis Majors

Billie Jean King, Biography, Titles, & Facts

Review: Advantage, Bobby, but Game, Set, Match, Billie Jean in 'Battle of the Sexes' - The New York Times

Did Billy Jean King legitimately defeat Bobby Riggs in The Battle of the Sexes? - Quora

A Necessary Spectacle: Billie Jean King, by Roberts, Selena

What would have happened if Billie Jean King had lost to Bobby Riggs 50 years ago? - The Boston Globe